package com.github.common.config;

import java.lang.reflect.Method;
import java.util.Arrays;

import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.interceptor.KeyGenerator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;

@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport
{

	@SuppressWarnings("rawtypes")
	@Bean
	public CacheManager cacheManager(RedisTemplate template)
	{
		RedisCacheManager cm = new RedisCacheManager(template);
		return cm;
	}

	@Bean
	@Override
	public KeyGenerator keyGenerator()
	{
		return new KeyGenerator() {

			@Override
			public Object generate(Object target, Method method, Object... params)
			{
				StringBuilder sb = new StringBuilder();
				sb.append(target.getClass().getName());
				sb.append(method.getName());
				Arrays.asList(params).forEach((param) -> sb.append(param));
				return sb.toString();
			}
		};
	}

	@Bean
	@Primary
	public RedisTemplate<?, ?> redisTemplate(RedisConnectionFactory factory)
	{
		StringRedisTemplate template = new StringRedisTemplate(factory);
		Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<>(Object.class);
		ObjectMapper om = new ObjectMapper();
		om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
		om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
		jackson2JsonRedisSerializer.setObjectMapper(om);
		template.setValueSerializer(jackson2JsonRedisSerializer);
		template.afterPropertiesSet();
		return template;
	}
	
	

}
